ALMACAL. XI. Over-densities as signposts for proto-clusters? A cautionary tale

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Chen, J. … celkem 9 autorů
ALMACAL. XI. Over-densities as signposts for proto-clusters? A cautionary tale.
Astronomy & Astrophysics. Roč. 675, July (2023), č. článku L10. ISSN 0004-6361. E-ISSN 1432-0746
Výzkumná infrastruktura: EU-ARC.CZ III - 90259
Klíčová slova: galaxies clusters * submillimeter * large-scale structure of Universe
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 6.5, rok: 2022
Způsob publikování: Open access
https://doi.org/10.1051/0004-6361/202347107

In this Letter, we report the serendipitous discovery of an extremely dense region centred on the blazar, J0217−0820, at z = 0.6 in the ALMACAL sky survey. Its density is eight times higher than that predicted by blind submm surveys. Among the seven submm-bright galaxies, three are as bright as conventional single-dish submm galaxies, with S870 μm > 3 mJy. The over-density is thus comparable to the densest known and confirmed proto-cluster cores. However, their spectra betray a wide range of redshifts.
Trvalý link: https://hdl.handle.net/11104/0351952